C# 正在下载标头已断开的数据

我刚刚遇到了以下问题：

我需要下载一个登录页面后面的数据。然而，当我发出get请求时，服务器提供了错误的数据——内容在那里，但标题集中没有内容长度，它是一个空字段。我用Fiddler查找了它，当我尝试用browser下载文件时也是如此，但browser完成了下载ok，而C#在从我的请求中获取响应对象时例外地掉了下来

标题如下所示：

HTTP/1.1 200 OK
Date: Sat, 06 Dec 2014 11:55:06 GMT
Server: Apache
Content-Disposition: attachment; filename=;
Pragma: no-cache
Expires: 0
Content-Length: 
X-Powered-By: PleskLin
Connection: close
Content-Type: application/octet-stream

 Hersteller;"Hersteller Art-Nr";"Lieferant Art-Nr";Ma�stab;Bezeichnung;EAN;"EK (netto)";UVP;USt;Verkaufseinheit;Hinweis;"Letzte Pro...

我的代码如下所示

    public string ReadPage(string path, string method = "GET"){
        var result = "";
        var request = (HttpWebRequest)WebRequest.Create(path);
        request.Method = method;            
        request.Host = "somehost.de";
        request.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);
        request.Referer = @"http://somehost.de/login.php?redir=list.php%3Ftype%3Dmm";
        request.AllowAutoRedirect = true;
        request.Headers.Add("Cookie", LoginCookie);
        try
        {
        var response = request.GetResponse();           
            using (StreamReader sr = new StreamReader(response.GetResponseStream()))
            {
                result = sr.ReadToEnd();
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            //throw;
        }
        return result;            
    }

异常出现在

var response=request.GetResponse（）中行。你知道怎么解决这个问题吗？我只想让它继续，让我读出数据

忘记了异常-这是一个带有消息的WebException
服务器违反了协议。Section=ResponseHeader Detail='Content-Length'标题值无效
我非常喜欢

稍有变化

public static class WebRequestExtensions
{
    public static WebResponse GetWEResponse(this WebRequest request)
    {
        if (request == null)
        {
            throw new ArgumentNullException("request");
        }

        try
        {
            return request.GetResponse();
        }
        catch (WebException e)
        {
            return e.Response;
        }
    }
}

您现在可以通过使用
request.GetWEResponse

public string ReadPage(string path, string method = "GET") {
    var result = "";
    var request = (HttpWebRequest)WebRequest.Create(path);
    request.Method = method;            
    request.Host = "somehost.de";
    request.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);
    request.Referer = @"http://somehost.de/login.php?redir=list.php%3Ftype%3Dmm";
    request.AllowAutoRedirect = true;
    request.Headers.Add("Cookie", LoginCookie);
    try
    {
        var response = request.GetWEResponse();           
        using (StreamReader sr = new StreamReader(response.GetResponseStream()))
        {
            result = sr.ReadToEnd();
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
        //throw;
    }
    return result;            
}

或者更好

public string ReadPage(string path, string method = "GET")
{
    var request = (HttpWebRequest)WebRequest.Create(path);

    request.Method = method;            
    request.Host = "somehost.de";
    request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
    request.Referer = @"http://somehost.de/login.php?redir=list.php%3Ftype%3Dmm";
    request.AllowAutoRedirect = true;
    request.Headers.Add("Cookie", LoginCookie);

    using (var response = (HttpWebResponse)request.GetWEResponse())
    using (var reader = new StreamReader(response.GetResponseStream()))
    {
        return reader.ReadToEnd();
    }
}

异常消息是什么？请查看@metadings，尽管它是一个仍然遵守HTTP规则的正确发送的错误响应，而不是一个错误发送的成功响应。@JonHanna ha？这难道不是一个回应吗？@metadings OP没有得到回应，他们得到的是垃圾。看起来很有趣，你可以试试！然而，我遇到了另一个问题——我的结果是在运行Fiddler时得到的。当fiddler关闭时，我甚至没有在登录过程中走那么远，需要先解决这个问题。。。